Sea Legs. The deck wizard has advantage on ability checks and saving throws to resist being knocked prone.
Spellcasting. The deck wizard is a 4th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 13, +5 to hit with spell attacks). It has the following wizard spells prepared:
Cantrips (at will): friends, mage hand, prestidigitation, ray of frost
1st level (4 slots): disguise self, fog cloud, mage armor, witch bolt
2nd level (3 slots): gust of wind, Melf's acid arrow, misty step
Quarterstaff. Melee Weapon Attack: +2 to hit, reach 5 ft., one target. Hit:3 (1d6) bludgeoning damage.
These salt-encrusted practitioners of magic are at once learned and superstitious. The crews of pirate ships generally give their deck wizards a wide berth, as they magically step from place to place and unleash their briny magic against attackers. The ship Sea Ghost in The Sinister Secret of Saltmarsh is home to a pirate deck wizard named Punketah.